When oil prices fluctuate globally, the BAF is imposed to basic ocean freight to stabilize the cost of freight. BAF has derived from the term bunker (fuel storage containers). Such surcharge is added up on the ocean freight by shipping companies to supplement fuel factor costs and termed as BAF.
Popular Answers. 1  A phase, or state of matter, is a domain within a many-body system within which relevant physical properties are uniform. Relevant properties may include chemical composition, stoichiometry, and density, which do not reflect how the components are arranged in space.
By Anne Marie Helmenstine, Ph.D. Definition: A phase change is a change in the state of matter of a sample. A phase change is an example of a physical change. Also Known As: phase transition.Examples: An example of a phase change is water changing from a liquid to vapor. Another example of a phase change is melted wax cooling into solid wax. phase change is an example of a physical change. Also Known As: phase transition. Examples: An example of a phase change is water changing from a liquid to vapor. Another example of a phase change is melted wax cooling into solid wax.